Forging-machine device



Oct. 9, 1923. -1,470,444

F. A. HALLECK FORGING MACHINE DEVICE led May 9. 1917 Patented 0st. 9,1923.

UNITED STATES PATENT orFicE.

FRANK A. HALLECK, OF OAK PARK, ILLINOIS, ASSIGNOB TO SULLIVAN MACHINERYi vCOMPANY, A CORPORATION OF MASSACHUSETTS.

Bonomo-MACHINE `DEV-Ion.

Application filed May 9, 1917. `Serial No. 167,509.

Illinois, have invented certain new and use ful Improvements inForging-Machine Devices, of which the following is a full, clear, andexact specification. i

My invention relates to forging machines. It has for its object toprovide 'improved meansl whereby the axial opening in a hollow drillVsteel may be expanded, and more particularly whereby the same may be eX-panded during the manufacture or sharpening of such a steel. Morespecifically, my invention has vfor .its object `to provide improved andsimplified means for expanding such an axial opening which is adaptedconveniently to use in-connection with the other mechanism of a forgingor sharpening machine and to application to such a machine at smallexpense and in such a manner that the power for operating the same isderived from that machine. c

In' the accompanying drawings, I `have shown for purposes ofillustration two embodiments which my invention may assume in practice.

In these` drawings,-

Fig. 1 is a side elevation partially in section, of a portion of a drillSharpener equipped with my improvement.

F ig- 2 is an end elevation ot a portion oit Y the structure shown inFig. 1, certain parts being broken away toffacilitate illustration. Fie.3 is a detail view partially in section,

showing the hole opening mechanism ex` panding the hole in a drillsteel.

Fig. 4 is a detail side elevation, partially in section, showing amodified form of the construction shown 1n Fig. 3.

Figl 5 is a plan view,partially in sect-ion,

of this modified construction.

In this illustrative form of'` my invention,4

I have shown the rsame applied to a drill sharpenel` Lof a well knowntype. As shown, this Sharpener is mounted .on a suitable frame or base1, on which are carried `swaging dies 2 and 3, of which the upper die 3is preferably adapted to be reciprocated relative to the lower die 2 ina well known manner, by means of, ya suitable motor, not.

cludingva link 4 and an operating foot lever'5. Cooperating with theseswaging dies `2 and 3, and herein disposed in rear of the same, areclamping dies 6 and 7, of which the lower die 6 is stationary while theupper die 7 is carried on `a vertically movable crosshead` 8l connectedby rodsl 8a with a second crosshead 8', the latter being guided insuitable ways disposed in the bottom of the base 4 or frame 1andoperated through a toggle connection 9 by a suitable horizontallydisposed motor, lnot shown, connected to the toggle connection 9 througha sliding block 10 in such a manner as to cause the die 7 to be raisedwhen the member 10 is pulled to the left, and to be lowered to clampingposition, as indicated in dotted lines in Fig. 1, and as shownl infulllines in F ig.- 8 when that member is moved toward the right, ythismovement being controlled by a controlling lever`11 operativelyconnected to the toggle operating motor through its usual connec tions,not shown. As is usual in such a device, a dolly `12 operated by astriking pin 13 connected to a second horizontally acting motor, notshown, also controlled by the lever 11,` is also so disposedadjacent-the mouth of the die 6 that when the dies 6 and 7 are clampedtogether and the dolly is set in operation it may upset the end ot astee clamped between those dies.

In my improvement, I rhave provided means actuated by the movablecrosshead 8 `for expanding an axial perforation,- as for instance thatshownat 14 in'Fig. 3, in ythe end of a drill steel at any time in theswaging or other forging operations. As shown,`

these means include a link 15 pivotally con-- nectedat 16 4to a suitableforwardly extending bracket or extension 17 on the crosshead 8 andextending downward therefrom between'the crosshead and the upper swagingdie 3.. Pivotally connected to the lower end of this link 15 is a pin18, of any suitable cross section` and preferably tapered as shown,which is reciprocable in asuitable passageway or recess in the lowerswaging die block, herein shown in the form `of an opening 19, andvadapted to be projected `through that opening out toward the front oithe frame, as shown in Fig. 3, when the crosshead 8V is in its lowermostposition shown in that gure, a portion 20 of the die 2 also preferablybeing cut away to permit thence movcmentof the link 1,5.,V 135; such aconstruction, it will be noted that it is only necessary to operate thecrossheadS, as by means above referred to controlled by the operatinglever 11, in orderl to cause the pin 18 to be projected out through theopen-v from its support or materially out of alignment with the otherforging devices, the same being readily brought intol alignment with thepin by simply depressing the forward end of the same. Attention is alsodirected to the fact that due to the toggle connection shown, the pin 18is positively withdrawn from the steel, and that any difficulty withsticking of the pin within the steel is avoided as, when such stickingoccurs, the withdrawing movement of theL pin acts to dlaw the steel intoengagement with the front face of the lower die block 2 and thuseffect-ually separate the pin yand steel without strain or other damage,or any effort on the part of the operator.

It will also'be noted that in my improved construction I may provide, ifdesired, interlocking controlling` mechanism between ther controllinglever 11, which controls 'both the clamping die operating` motor and thedolly operating motor, andthe foot lever 5, which controls the motorfory the swaging dies. assumes the form of a link 27 pivoted at itsupper end to the lever 11 and having its lower end movable ina guide 28on the frame and adapted to cooperate with the foot lever 5 and preventoperation thereof in a predetermined position of the clamping dies. Asshown, this lever 5 is pivoted at 29 and provided with an arm 30 thereonadapted to engage the lower end of the link 27 and thereby prevent therotation of the pivot rod 29 and a crank 31 connected to the oppositeend thereof and to the controlling mechanism for the swaging die motor.Thus, it will be notedv that while the clamping dies are in clampingposition and the operator is holding .the steel against the front faceof the lower swaging die to rexpand the hole in the steel, all danger orinconvenience arising from the operation of the swaging die motor isentirely overcome. Here, of course it will also be understood that, asin a well known construction, the downward movement ofthe lever 11referred to above, while sufficient to operatethe'co-ntrolling mechanismfor the clamping dies may not be sufficient to operate the controll- Asshown herein. this connectionv ing mechanism for the dolly operatingmotor. y

In Figs. et and 5, I have illustrated a modified form of theconstruction shown in Figs. 1, 2, and 3, wherein it will be noted thatinstead of utilizing a toggle I have provided a forwardly extending cammember 22 fixed to the crosshead 8 and movable therewith. This cammember I have shown as provided with an inclined surface 23 adapted toengage with the enlarged inner end 24 of a pin A25 freely reciprocablein a suitable recess in the lower die block 2 and normally held inretracted position and in the path of the surface 23 by a coiled spring26. Obviously, in this construction when the crosshead 8 is lowered theaction of the cam surface 23 will be such as to force the pin 25 forwardagainst the tension of the spring 26 and project the pin throughtheblock in such a manner as to enable it to open the hole in a steelheld opposite the same. It will also be noted that, while in thisconstruction the crosshead 8 will not positively pull the pin from thesteel as the crosshea-d 8 moves upward carrying with it the cam surface23, the operator will be able to free the steel from the pin by pullingon the same', and that as soon as the pin is released itwill be returnedto the position shown in Fig. 4, ready to be again engaged by the camsurface 23.

Due to my improved construction, it will be noted that the operator mayverv conveniently expand the hole in hollow drill steel at any timeduring the forging operation, the hole expanding or punching mechas nismbeing located adjacent to and in substantial axial alignment with theother forging mechanism. It will also be evidentthat by simplymanipulating the controlling lever 11 the punch may be operated at anytime, and that through the provision yof means connected to and movingwith the powerful clamping dies, a very powerful punching action isobtainable. At the same time, attention is directed to the fact that theconstruction shown is exceedingly simple and of a type which can bemanufactured and readily applied at small expense to a machine ofstandard construction. It will also be observed that by the provision ofthe clamping, upsetting, swaging and hole opening punch mechanisms in avertically narrow horizontal Zone, the various operations on a steel maybe performed with much greater ease than would be the case were itrequisite for a blacksmith to stoop over, or lift and lower bodily asteel during the processl of sharpening, and that I have'herein providedan arrangement, moreover, in which the steel being sharpened may beshifted from the position for one operation to that for another withoutsubstantial lowering of the whole steel. These and other advantages ofner as to assume various other forms with-` out departing from itsspirit, it'being my intention to include all such modifications withinthe scope of the appended claims.

What I claim as new` and desire to secure by Letters Patent is:

1. In a forging mechanism, a vertically movable clamping member, ahorizontally reciprocable punch, and punch operating means carried bysaid clamping member.

2. In a drill sharpening mechanism, drill steel clamping mechanismincluding a stationary clamping member and afmovable clamping member, apunch reciprocable in a direction parallel to that in which the axis ofa steel would lie when clamped between said clamping members, and meansactuated by said movable clamping member and constituting an operativeconnection between the same and said punch for actuating the latter.

3; In forging machine, a vertically movable clamping member, operatingmeans therefor, an abutment having a horizontal recess therein, a punchreciprocable in said recess, and means carried by said clamping memberfor operating said punch.

4. In a forging mechanism, swaging mechanism including a swaging diehaving a recess therein, a punch reciprocable in said -recess, and meansfor reciprocating said punch.

5. In a forging mechanism, sWa-ging mechanism including a swaging diehaving a recess therein, a punchy reciprocable in said recess, avertically reciprocable crosshead, and means carriedl thereby forreciprocating said punch. i

6. In a forging mechanism, swaging mechanism including a-swaging diehaving a recess therein, a punch reciprocable in said recess, avertically reciproca-ble crosshea-d, and means carried thereby forcausing said punch to rbe projected from said recess.

7. In a forging machine, swaging mechanism `including a swaging die,`clamp` ing mechanism including a reciprocable crosshead, a punch andpunch operating mechanism operated by said crosshead and disposedbetween said mechanisms.

8. In a forging machine, swaging mechanism including a swaging diehaving a work engaging face, steel clamping mechanism including areciprocable crosshead, and punching mechanism operated by saidcrosshead and disposed adjacent the work engaging face of said die inclose propinquity thereto.

9. In a forging machine, swaging mechanism including a recessed swagingdie, steel clamping mechanism includinga reciprocable crosshead, andpunching mechanism operated by said crosshead reciprocable in the recessin said die.

10. In a forging mechanism, clamping mechanism including a reciprocablemem- Jber, swaging mechanismincluding a swaging die arranged adjacentsaid clamping mechanism, a punch disposed adjacent the work engagingportion` of said die, and means carried by the movable member of saidClamping mechanism for operating said punch.

11. In a `forging mechanism, clamping mechanism including a reciprocablemember, swaging mechanism including a`swaging die arranged adjacent saidclamping mechanism, a punch disposed adjacent the work engaging portionof said die, and

means forming a toggle connection )connected to said punch and carriedby the movable member of said clamping mechanism. l

12. In a forging mechanism, clamping, upsetting, and swagingi mechanismsdisposed in substantial axial alignment, a

punch disposed in substantial axial align-` ment with said mechanisms,and means connected to one of said mechanisms for oper-` ating saidpunch.

13. Ina forging mechanism, clamping, upsetting,` and swaging mechanismsdisposed in substantial axial alignmenaa punch disposed in substantialaxial alignment with said mechanisms', and means connected to saidclamping mechanism for operating said punch.

14C. In a forging mechanism, clamping mechanism, upsetting mechanism,swaglng mechanism including a swaging die having a recess therein, saidmechanisms being disposed in substantial axial alignment, a punchmovable in said recess, and means connected to one of said mechanismsfor reciprocating said punch. i

15. In a forging mechanism, a clamping mechanism, upsetting mechanism,swaging mechanismincluding a swaging die having a recess therein, said'mechanisms being disposed in substantial axial alignment, a punchmovable 'in said recess, and means connected t0 .said clamping mechanismfor reciprocating said punch.

16. In a forging mechanism, clamping mechanism, upsetting4 mechanism,swaging mechanism including a swaging die `having a recess therein, saidmechanisms and recess being disposed in substantial axial alignment, apunch movable in said recess, and

means connected to said clamping mecha-` nism for reciprocating saidpunch in opposite directions.

17. A machine of the character described comprising upsetting mechanismincluding alsl mechanism and including a movable clamping member,swaging mechanism arranged v adjacent said upsetting mechanism andincluding fixed and movable members, and opening expanding mechanismincluding a reciprocating punch moving` in the fixed member of saidsivaging mechanism.

18. A machine oit the character described comprising` upsettingmechanism including a movable clamping member, sivaging mechanismarranged adjacent said upsetting mechanism and including fixed andmovable members, and opening expanding mechanism arranged immediatelyadjacent said u psetting and swaging mechanisms and including areciprocating` punch operated by said movable clamping member.

19. A machine of the character described comprising upsetting mechanismincluding a movable clamping member, swaging mechanism arrangedVadjacent said upsetting mechanism and including fixed and movablemembers, and opening expanding mechanism arranged immediately adjacentsaid upsetting` andsivaging mechanisms and including a reciprocating`punch guided for movement in the iixed member of said swaging mechanism.

20. A machine of the character described comprising upsetting mechanismincluding a movable clamping member, s'waging mechanism arrangedadjacent said upsetting 'ixed and movable members, and openingexpandingmechanism arranged immediately adjacent said upsetting and sivagingmechanisms and including a reciprocating` punch guided for movement inthe fixed member of said swaging mechanism and operated by said movableclamping member.

2l. ln a machine of the character described, sivinging mechanismincluding a swaging die, opening expanding mechanism including a punchcarried by said sWaging die, and means for preventing operation of saidsWaging mechanism When said expanding mechanism is operated.

22. In a forging machine, a motor actuated swaging mechanismv includinga stationary die, motor actuated opening expanding mechanism including apunch carried by said stationary die, control means for said mechanisms,and locking mechanism for the control means of said sWaging mechanismoperated by movement of the control means for said opening expandingmechanism.

23. In a forging machine adapted for the sharpening of drill steels,sWaging mechanism including a. sWaging die, opening eX- pandingmechanism including a punch disposed in close juxtaposition to theWorking face of said die, and means for preventing operation of saidsivaging mechanism when said opening expanding mechanism is operated.

24. ln a forging machine adapted for the sharpening of drill steels,sWaging mechanism including a sWaging die, opening expanding mechanismincluding a punch disposed in close juxtaposition to the Working face ofsaid die, control means for said sWaging and opening expandingmechanisms, and an interlock between said control means to preventsimultaneous operation thereof.

25. In a drill sharpening mechanism, drill steel clamping mechanismincluding a stationary clamping member and a movable clamping member, apunch reciprocable in a direction at an angle to the direction ofmovement of the movable clamping member, and means actuated by saidmovable cla-mping member and constituting an operative connectionbetween the same and said punch for actuating -the latter.

26. In a drill sharpening machine,swaging mechanism includingstation-ary and movable swaging dies providing cooperating bit formingrecesses, clamping means including relatively movable memberscooperating to form a steel holding recess, upsetting mechanismincluding a Work engaging member, and a hole opening punch, said partsbeing constructed and arranged so that said recesses, said Work engagingmember, and said punch lie in a vertically narrow horizontal zone.

27. In a drill sharpening machine, swaging mechanism includingstationary and movable sWaging dies providing cooperating bit 'formingrecesses,clamping means including relatively movable members cooperatingto form a steel holding recess, upsetting mechanism including' a Workengaging member, and a hole opening punch, said 'parts being constructedand arranged so that said recesses, said Work engaging member, and saidpunch are so disposed that an operator standing in front of the drillsharpening machine may shift a steel being sharpened from one to anotherthereof Without substantial lowering of the Whole steel.

ln testimony Whereof l affix my signature.

FRANK A. HALLECK.

